240 



Explanation of Plates. 



Fig. 



PLATE J. 



AECIDIUM ON DANTHONIA. 



39. Leaves with aecidia in dense clusters 



40. Cluster of aecidia on leaf ... 



41. Section of aecidium showing peridial wall and spores in chains 



42. Chain of aecidiospores 



43. Single spore detached and more or less rounded 



44. Pseudoperidial cells seen from the surface ... 



nat. size 



... X 15 



X 50 



... X 1000 

 ... X 1000 

 ... X 550 



